Bres Mac Elatha had Fomorian ancestry on his paternal side and the Tuatha
Dé Danann
on his maternal side. He came into power after Nuada his predecessor lost
an arm in battle. He was not a very popular ruler as he was very
parsimonious, a trait which The Tuatha Dé despised and so the chieftains tried
to oust him from power. He retaliated calling for back up from his
father's side of the family the Fomorians and so the
Second Battle of Magh Tuiredh began.